| 摘要 |
<p>A door hold-open device having manual and automatic release capabilities, includes a straight linear track (21) having a substantially U-shaped cross-section and acting as a guide for a roller assembly (29), the roller assembly having a provision (28) for engaging a door catch assembly and for attachment to a door control arm; a door catch assembly (31, 32) fixed within the track and having a power-actuated plunger-driven member (23) for engaging and for releasing the roller assembly; and further provision for manually over-riding the power actuated plunger-driven member to release a door. <IMAGE></p> |
